/Engine/Source/Runtime/AIModule/Classes/Perception/AIPerceptionSystem.h
Unregisters given actor from the list of active stimuli sources
void UnregisterSource ( [AActor](API\Runtime\Engine\GameFramework\AActor) & SourceActor, const [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UAISense](API\Runtime\AIModule\Perception\UAISense) > Sense )